Notes: Ahh, the ole' sophomore slump. The 2008 Acadia suffers from widespread transmission failure around 75,000 miles.


really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
3 / 0
Average Mileage:
83,535 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2008 GMC Acadia brakes problems

brakes problem

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2008 GMC Acadia Owner Comments (Page 1 of 2)

problem #24

Jul 122016


  • 131,000 miles


The contact owns a 2008 GMC Acadia. While driving approximately 55 mph, the vehicle stalled, the brakes seized, and the traction control and ABS indicators illuminated. The contact lost control of the steering. The vehicle was able to restart on the first attempt. The failure recurred five times. The vehicle was not diagnosed or repaired. The manufacturer stated that there were no recalls for the vehicle. The failure mileage was approximately 131,000.

- Mount Olive, NC, USA

problem #23

Jul 292016


  • 127,000 miles
While driving at interstate speeds in 90+ degree weather, the 2008 GMC Acadia experienced a complete loss of power. Engine quit along with all electronics, power steering and power brakes. Let car sit for 20 minutes and it started up and drove fine for a week or so then the same issue occurred again. This has happened 3 times within 5 weeks. The vehicle has been into an independent mechanic and two dealerships. Of those dealerships, we have taken the vehicle to the local autonation GMC dealer 3 times over the course of 2 weeks and all groups who have looked at the vehicle stated that they could not find and "codes" after running the computer diagnostics. We have requested an on-board diagnostic computer to be ordered from autonation GMC park meadows (co) but have received no response. This is a very dangerous issue while driving at highway and interstate speeds. Have researched other consumers with the same situation on the NHTSA website.

- Centennial, CO, USA

problem #22

Mar 102016


  • 150,000 miles
The contact owns a 2008 GMC Acadia. While driving at various speeds in rainy weather, the contact noticed water leaking from the top of the vehicle and dashboard. In addition, when the brake pedal was depressed, the pedal shook violently without warning. The vehicle was taken to a dealer on two separate occasions; however, the cause of the failure was undetermined. The manufacturer was not notified of the failure. The failure mileage was 150,000. The VIN was unavailable.

- Bicknell, IN, USA

problem #21

Jan 252016


  • 197,600 miles


Going down the high way the stabilitrack light comes on after turning off the car turning it back on it goes out the light hasn't came back on its been a couple months it only comes on when driving far. Also have a problem with the brakes they go all the way to the floor hard to stop the car. My girlfriend told me about the problem I drove it myself to see if it would do it to me never did till today I almost hit 2 cars

- Clairton, PA, USA

problem #20

Nov 142015


  • 120,000 miles
The contact owned a 2008 GMC Acadia. While driving at approximately 55 mph, the brake pedal was depressed and failed to respond. As a result, the contact's vehicle crashed into another vehicle. The contact sustained knee and head injuries and the passenger sustained unknown injuries that needed medical attention. In addition, the driver in the other vehicle sustained unknown injuries that also needed medical attention. A police report was filed. The vehicle was destroyed. The manufacturer was not notified of the failure. The approximate failure mileage was 120,000.

- Youngsville, NC, USA

problem #19

Jun 012015


  • 90,000 miles
The service brake light and stabilatrac comes on every time you start the vehicle and sometimes while driving. Have not received a quote from the dealership yet. Will there be a recall that effects this or is it our problem to drop 1500 dollars to repair a manufacturer defect

- Green Bay, WI, USA

problem #18

Jul 072015


  • 123,500 miles


While driving the stabilitrak off light, service brake system light came on. Upon taking it to the dealership they informed me that the master cylinder was leaking into the brake booster and both parts need to be replaced or the whole brake system could/would fail. This is a known defect with the GMC Acadia and could result in a serious accident/fatality. There was no indication of an issue due to an apparent defect in construction where the brake fluid does not leak externally, but rather internally to another component. This serious issue has the potential to cause catastrophic damage and should be recalled by GMC.

- Cincinnati, OH, USA

problem #17

May 012015


  • 65,000 miles
My vehicle began giving a stabilitrak notification. I took the vehicle in to identify the issue I was told by the GM service department that the master cylinder was leaking into the booster and would eventually cause the brakes to fail. Upon further research I have found several individuals who have dealt with the same issue. This is obviously a factory issue that is eventually going to cause injury or possibly fatality.

- Riverside , CA, USA

problem #16

Sep 012014

Acadia 6-cyl

  • 86,000 miles
It had rained the night before and I came out to start my car and noticed that my driver side airbag was leaking water and there was a puddle of water on the floor board and water was dripping from my emergency brake. It has done this several times since then and I'm afraid my airbag won't work properly if I was ever in a wreck.

- Murfreesboro , TN, USA

problem #15

Feb 042015


  • 100,000 miles
Stabilitrak system says it is "off" car makes a recurrent beeping noise, warning light to check brake system shows. Occurs randomly at any time of day. No leaks from car, still brakes well.

- Elizabethtown, KY, USA

problem #14

Sep 052012


  • miles


The ABS warning light on my GMC Acadia has come on multiple times over the last couple of years. The problem goes away after adding brake fluid to the master cylinder. After searching online, this is an extremely common problem with GMC Acadia's, where the master cylinder leaks brake fluid into the brake booster. I am concerned that this is a major safety risk, because the vehicle will lose braking ability and at one point, the brake booster is not going to work due to the fact that it is filled with brake fluid. GM needs to stand behind its products... not just say that they are the "new" GM. This is a major safety hazard.

- Newtown, PA, USA

problem #13

Jun 182014

Acadia 4WD 6-cyl

  • 117,000 miles
I have brought my vehicle in before our trip to massachussetts to the GM dealer in hastings, mn as the stop engine now/fuel pressure light kept coming on all the time. They told me that it is probably just a sensor issue. So I drove my car. In the last few weeks more lights came on such as traction control is out, stabilization needs attention, breaks need attention, and check engine. So they figured just more sensor issue. 9/9/14 I was backing out a parking spot with a friend of mine and my power steering was disabled and almost caused and accident when the break service light came on. Finally my husband took it back to the dealer to find that now I need a new timing chain and updates $2045, transmission control module w/solenoid $1226.58, and master cylinder and brake booster $690. They should have caught this before as GM is well aware of the issues according to complaints online and the service man who told me he sees this a lot. I noticed there is a recall on 2007 and 2009 for several of these issues. Had I not have my husband bring this in again I am sure there would have been a severe accident involving me and possibly my children. GM offered to pay for half the services but honestly they know this is an issue with their model. To tell people nothing is wrong, nothing is wrong and bam everything wrong at just 120K miles seems fishy. I want this fixed before someone gets hurt. I have a friend with the same model with many of the same issues. This is not fair to leave consumers in the dark considering this is vehicle mostly used by families.

- Cannon Falls , MN, USA

problem #12

Mar 152013

Acadia 6-cyl

  • 58,000 miles
I have had to replace a transmission on a car with just over 55000 miles. The windows leak when sitting outside in the rain. The power steering locks up when you drive thru a puddle. The braking system makes some god awful noise when going on or off a ramp. This was our very first brand new off the line car. Really wish we had waited until the bugs were worked out.

- Danville, IL, USA

problem #11

Feb 022011

Acadia 6-cyl

  • 32,689 miles
On February 2, 2011 my cars service brake system and stabilitrak lights came on and traction control turned off. Car was brought into dealer for diagnosis and repair. Master cylinder leaking break fluid into booster. If not fixed and brake fluid leaks further, brakes will fail. August 6th 2014, vehicle was brought back to dealer for same issues. Service brake system/brake lights on. Stabilitrak light on and traction control turned off on vehicle. SUV will loose brakes if all the brake fluid leaks into booster. Faulty parts pose a serious hazard as there is no evidence visual to the eye that break fluid is leaking. If breaks were to go out serious injuries and accidents would be the result. GM has been notified of the issue and will not stand behind their parts. GMC sees no problem in master cylinders and boosters failing after approximately 30,000 miles and therefore customers are faced with thousands of dollars of repairs. GMC won't take ownership to replace faulty parts that have gone bad repeatedly. 3 master cylinders and 3 boosters in a car that is only at 80,000 miles is a serious defect in parts. We are lucky brakes haven't failed 100% and killed innocent people because of GMC's negligence on fixing faulty parts that have been well documented on master cylinder and booster replacements.

- San Diego, CA, USA

problem #10

Sep 012013

Acadia 6-cyl

  • 65,000 miles
Water leaking into vehicle cabin entering through panoramic sunroof and ending in the electronic components under the driver side causing multiple dashboard warning lights to turn on and inoperable at times when lit. On two instances vehicle unable to start took to dealership for repairs and after a few days and unable to replicate was sent home. Currently breaks and electronic stability control lights come on and off intermittently and unable to operate cruise control.

- Sunyside, WA, USA

problem #9

May 152014


  • 39,000 miles
The contact owns a 2008 GMC Acadia. The contact stated that when servicing the vehicle, she was notified that the brake booster, rack and pinion and the wave plate failed. As a result, the transmission, brake booster, and the rack and pinion needed to be replaced. The manufacturer was made aware of the failure. The vehicle was not repaired. The failure and current mileage was 39,000.

- Chicago, IL, USA

problem #8

May 062014

Acadia 6-cyl

  • 86,236 miles
Power steering failure again! 4/30/2010 at 23624, then 10/31/2013 at 80110, now only driven approx. 6,000 more miles and power steering is failing again May 2014. 10/31/2013 master cylinder also had to be replaced. I absolutely loved my Acadia for the first 50,000 miles, but ever since I started having transmission issues, this vehicle has turned to a money pit. I will never buy a general motor family vehicle again. Very disappointed with the short life of this american made vehicle.

- Livermore, CA, USA

problem #7

Sep 152013


  • 92,000 miles
The contact owns a 2008 GMC Acadia. The contact stated that while driving at various speeds, the brake warning lamp illuminated. The vehicle was taken to the dealer. The technician diagnosed that the master cylinder needed to be replaced. The manufacturer was made aware of the failure. The vehicle was not repaired. The failure mileage was 92,000 and the current mileage was 98,000.

- Cincinnati, OH, USA

problem #6

Mar 062014

Acadia 6-cyl

  • 62,537 miles
Stopped at light, emergency stabilitrak message flashed, stabilitrak light cam on, then the ding, ding, ding then the brake light came on, then another message: Warning service breaks. A few seconds later the brake warning went away, the stabilitrak light stayed on. I pulled over, stopped and turned off the ignition, and the stabilitrak light turned off. No other issues in friving this day. The next morning same issue, about 3 miles of driving, stopped at the traffic light, then the ding, ding, ding...then the stabilitrak message and then the : warning service breaks message.

- El Paso, TX, USA

problem #5

Nov 192012

Acadia 6-cyl

  • 64,000 miles
Warning indicators turn on for the system braking components such as ABS brake failure, traction control and loss of engine power while accelerating between 35 to 50 miles per hour. Engine power decrease and the car speed and power is decreased with the loss of engine power warning. The car would just stop at this point. I contacted onstar each time this issue occurred to a diagnostic scan and each report indicated that same warning reported on the console. After 10 minutes the vehicle would re-start and I was able to drive it. This issue has re-occurred within 2 years and the GMC service department was unable to diagnose the problem but during the latest incident the mechanic had ruled the issue as low brake fluid. I've investigated this issue online on various blog forums for the GMC Acadia with the same description of braking system failure and others report the failure as an internal braking malfunction in which the master cylinder leaks into the brake booster. I'm concerned that this problem could potential become fatal is it recurs. The GMC service department refuse to look into my concern and investigate the problem. There are no visible signs of a leak because the leak is internal.

- Pflugerville , TX, USA

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